If your brokerage has been catering to expats for more than 10 years, it is likely the profile of your audience has changed significantly. Once, most expats were senior management (often male) from multinational organisations sent on assignment for a fixed period to set up new offices before returning home. The profile and reasons for working abroad as an expat have since changed.
There is a much more diverse group of people working abroad for a variety of different reasons. Digital nomads, people who can work from anywhere in the world with an internet connection, are an emerging market for international health insurance. Their needs may be different to someone working for a corporation. If digital nomads are your target market you should research where they can be found and the biggest challenges they have.
See how your business can help, whether it is answering questions they have on healthcare in a digital nomad forum or providing them with guides to healthcare in a country they may wish to live.